package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.exception.UserNotLoginException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

/**
 * @author mbg
 * @version 3.5.3
 */
@Service
@Slf4j
public class UserServiceImpl implements UserService {
//微信服务接口地址
    public static final String WX_LOGIN = "https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;
    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {
//        调用微信服务接口，获得当前用户的openId
        Map<String, String> map=new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",userLoginDTO.getCode());
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN, map);
        JSONObject jsonObject = JSON.parseObject(json);
        String openId = jsonObject.getString("openid");

//        判断openId是否为空，为空表示登陆失败，抛异常
        if (openId==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
//        判断当前用户是否新用户，为新用户则创建
        User user=userMapper.getOpenId(openId);
        if (user==null){
            user=  User.builder()
                    .openid(openId)
                    .createTime(LocalDateTime.now())
                    .build();
          userMapper.insert(user);
        }
//        返回用户数据
        return user;
    }
}
